Our article today is all about RISC-V Interrupts on the tiny adorable Pine64 Ox64 BL808 64-bit Single-Board Computer (based on Bouffalo Lab BL808 SoC)…
(1) What’s inside the Platform-Level Interrupt Controller (PLIC)
(2) Setting up the PLIC at startup
(3) Enabling the PLIC Interrupt for Serial Console
(4) Handling PLIC Interrupts for UART Input
We’ll walk through the steps with a simple barebones operating system: Apache NuttX RTOS (Real-Time Operating System). Though we’ll hit a bumpy journey with our work-in-progress NuttX on Ox64…
(5) Leaky Writes seem to affect adjacent PLIC Registers
(6) Interrupt Claim doesn’t seem to work right
Check out the article:
RISC-V Ox64 BL808 SBC: UART Interrupt and Platform-Level Interrupt Controller (PLIC)
Lup
